This page provides links to maps available throughout the Green Book. Maps are updated as needed each time a new version
of the Green Book is posted. Each map contains a month/year date indicating the last time the map was updated for a Green Book posting.
Links for new sets of maps will be added to this page as nonattainment areas are redesignated to maintenance for new standards,
and as new NAAQS are promulgated.

The maps are downloadable as zipped PDF files. The filenames of the zipped maps includes the date the Green Book was posted.
The individual state maps have been generated with ESRI shapefiles for 1997 8-hour Ozone,
1997 PM-2.5, 2006 PM-2.5, 2008 Lead and 2010 SO2 areas (these shapefiles are available on the Green Book
GIS Downloads web page).
Since area shapefiles are not available for standards other than those designated since 2004,
maps for older pollutant standards are national maps based on whole county boundaries.

To save the map download file, click on the link. You will be given the choice of opening or saving the zipped files.
Identify a directory for the zip file when prompted. If your browser loads the data onto the screen
instead of asking you where to save the file, hit the back button, click on the file with your right mouse button, and select
the save option (e.g., "Save Link As" in Firefox or "Save Target As" in Internet Explorer).

While we try to keep the information timely and accurate, we make no expressed or implied guarantees.
We will attempt to correct any errors brought to our attention.
We request that you contact us by clicking on the "Contact Us" link near the top of this page with
any comments regarding or corrections to the posted information.